AirHint found the following cheapest return flights from Kelowna (YLW) to Seattle (SEA) in August 2025 (see full year).

Return flights

27 Aug - 31 Aug	Alaska Airlines	direct
30 Aug - 13 Sep	Alaska Airlines	direct
11 Aug - 08 Sep	WestJet
21 Aug - 28 Aug	Alaska Airlines
15 Aug - 23 Aug	WestJet
06 Aug - 11 Aug	Air Canada
08 Aug - 11 Aug	WestJet
01 Aug - 03 Aug	Air Canada
06 Aug - 17 Aug	WestJet

Also check the deals for one-way flights from Kelowna to Seattle in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Kelowna to Seattle in August from 158€

Return flights